From 08d2674ad4612f44c3c9aed6337b240cd7056957 Mon Sep 17 00:00:00 2001
From: 2881099 <2881099@qq.com>
Date: Fri, 3 Mar 2023 10:43:56 +0800
Subject: [PATCH] update

---
 嵌套查询.md | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

diff --git a/嵌套查询.md b/嵌套查询.md
index 8c871f2..f62b641 100644
--- a/嵌套查询.md
+++ b/嵌套查询.md
@@ -141,7 +141,7 @@ list.Add(new User1 { Id = Guid.NewGuid() });
 list.Add(new User1 { Id = Guid.NewGuid() });
 list.Add(new User1 { Id = Guid.NewGuid() });
 
-var listSql2 = fsql.Select<UserGroup>()
+fsql.Select<UserGroup>()
     .FromQuery(fsql.Select<User1>().WithMemory(list))
     .InnerJoin((a, b) => a.Id == b.GroupId)
     .ToSql();
@@ -164,7 +164,7 @@ INNER JOIN (
 自动分表后，如果有分页的需求 或者分组聚合的需求可以参考以下代码
 
 ```csharp
-var result = fsql.Select<Statistics>()
+fsql.Select<Statistics>()
     .Where(a => a.createtime.BetweenEnd(startTime, endTime))  //时间字段定位表
     .WithTempQuery(a => new { item = a })
     .GroupBy(a => a.item.shareId)
@@ -198,6 +198,48 @@ GROUP BY a.`shareId`
 LIMIT 0,30
 ```
 
+#### 场景6：FromQuery 多个查询，最后映射查询
+
+```csharp
+var query2 = fsql.Select<UnitLog, LoadPlan, Instruction>()
+    .InnerJoin((a, b, c) => a.LoadNo == b.LoadNo && a.UnitTransactionType == "TO")
+    .InnerJoin((a, b, c) => b.InstructionNo == c.InstructionNo)
+    .WithTempQuery((a, b, c) => new
+    {
+        a.LoadNo,
+        a.SeqNoLog,
+        c.DeliveryInstractionStatus,
+        c.UpTime,
+        RN = SqlExt.RowNumber().Over().PartitionBy(a.UnitId).OrderByDescending(a.SeqNoLog).ToValue()
+    });
+var query3 = fsql.Select<Unit>();
+
+fsql.Select<UnitLog>()
+    .FromQuery(query2, query3)
+    .InnerJoin((a,b,c) => a.SeqNoLog == b.SeqNoLog)
+    .InnerJoin((a,b,c) => a.UnitId == c.UnitId)
+    .Where((a,b,c) => b.RN < 2)
+    .ToSql((a,b,c) => new MB51_View
+    {
+        //CkassIfCation = a.CkassIfCation,
+        PGI = b.DeliveryInstractionStatus,
+        PGITime = b.UpTime,
+        IsDelayPGI = true,
+        RunNo = c.RunNo
+    });
+```
+
+```sql
+SELECT a.[CkassIfCation] as1, b.[DeliveryInstractionStatus] as2, b.[UpTime] as3, 1 as4, c.[RunNo] as5 
+FROM [UnitLog] a 
+INNER JOIN (SELECT a.[LoadNo], a.[SeqNoLog], c.[DeliveryInstractionStatus], c.[UpTime], row_number() over( partition by a.[UnitId] order by a.[SeqNoLog] desc) [RN] 
+    FROM [UnitLog] a 
+    INNER JOIN [LoadPlan] b ON a.[LoadNo] = b.[LoadNo] AND a.[UnitTransactionType] = N'TO' 
+    INNER JOIN [Instruction] c ON b.[InstructionNo] = c.[InstructionNo] ) b ON a.[SeqNoLog] = b.[SeqNoLog] 
+INNER JOIN [Unit] c ON a.[UnitId] = c.[UnitId] 
+WHERE (b.[RN] < 2)
+```
+
 ## WithParameters 参数化共享
 
 开启参数化查询功能后，使用 WithParameters 共享参数化，避免产生相同的参数名称：